Brake-shoe for vehicles.



PATENTED OUT 11 1904. W. w. MORTON. BRAKE SHOE FOR VEHICLES.

APPLICATION FILED DEC. 17. 1903.

WITNESSES: INVENTUH ;L A CU, M, I By N0 MODEL.

I TTORNEY.

UNITED STATES Patented October 11, 1904:.

PATENT OFFICE.

WILLIAM W. MORTON, OF CAMDEN, NEW JERSEY.

BRAKE-SHOE F'OR VEHICLES.

SPECIFICATION formingpart of Letters Patent No. 772,170, dated. October 11, 1904.

Application filed December 17,1903. Serial No. 185,495. (No model.)

To all whom, it may concern! Be it known that I, WILLIAM W. MORTON, of the city and county of Camden, State of New Jersey, have invented an Improvement in Brake-Shoes forVehicles, of which the following is a specification.

My invention has reference to brake-shoes for vehicles; and it consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof.

The object of my invention is to provide a simple construction whereby among other advantages the brake-shoe is normally held upon the shoe-support in such a manner that it antomatically adjusts itself to correspond to the position of the shoe relatively to the wheel-' tire under varying loads. The said shoe being carried by the vehicle-body necessarily assumes various vertical positions under the varying loads carried by the body, and consequently introduces a requirement of adjustment.

In carrying out-myinvention I provide theso as to make it substantially rigid with the transverse shaft or brake support, and a brakeshoe fitted about the sleeve. In this manner the sleeve may be made of any thickness for the purpose of properly fitting any brake-shoe on the transverse shaft.

My invention also comprehends, in connection with the above features, the employment of a spring held in place by the transverse shaft and adapted to press the brake-shoe against the collar of the brake-shaft to create a friction sufficient to normally holdthe brakeshoe in definite position with capacity for automatic adjustment.

My invention further comprehends the employment of a washer interposed between the sleeve and the collar of the brake-shaft and provided with alaterally-projecting lug adapted to enter a recess in the side of the brakeshoe to limit the extreme oscillation of the brake-shoe upon the sleeve and at the same time to permit the said position of oscillation to be adjusted relatively to the brake-shaft.

My invention further comprehends details of construction which, together with the above features, will be better understood by reference to the drawings, in which Figure l is a side elevation of a brake-shoe and with the brake-shaft in section, taken on line 1 1 of Fig. 2. Fig. 2 is a sectional elevation taken on line 2 2 of Fig. 1. Fig. 3 is a sectional elevation taken on line 3 3 of Fig. 2. Fig. 4. is a perspective view of the washer. Figs. 5 and 6 are plan and elevation views of the spring, and Fig. 7 is a perspective view of the spring-retaining cap.

A is the brake-shaft and is provided with a collarBand a spindle C. The end of the spindle is screw-threaded and provided with a clamping-nut D.

F is a sleeve which fits upon the spindle C and clamps the washer Gr between it and the collar B. i

E is a spring-retaining cap and is clamped upon the end of the sleeve F by the nut D.

It will be seen that the cap E and the sleeve F and the washer G are clamped tightly andrigidly with respect to the brake-shaft A, so

that they in effect constitute a part thereof.

1 is the brake-shoe and is loosely journaled upon the sleeve F and presses against the washer G at one side by means of the action of a spring H, which encircles the sleeve F and is inclosed by the cap E. This spring is preferably made in the form shown in Figs.

5 and 6, in which it is annular in plan and serpentine in elevation, so as to provide a series of points of contact with both the cap E and the brake-shoe I.

J is a removable wearing part of the brakeshoe.

The washer G is provided witha laterallyextending projectionor lug g, which is received in a recess 2' in the seat of the brakeshoe 1, as shown in Figs. 2 and 3. The recess z is of considerable length, so as to give the brake-shoe some freedom of play relatively to the lug. g; but said lug g limits the possible oscillation of the brake-shoe on the sleeve F and relatively to the washer G.

The action of the spring H creates sufficient friction on the brake-shoe to hold it normally in any position assumed, and hence the brakeshoe has capacity for oscillating itself when brought in contact with the wheel-tire to adjust itself in position to properly act upon the tire. The position assumed by the brakeshoe depends on the extent of the load carried by the vehicle-body and which varying loads naturally depress the brake-shoe to different elevations relatively to the wheel. By loosening the nut D the washer G can be adjusted to any position desired and again clamped in place, and this will shift the lug 9, so that the brake-shoe will have received a new adjustment with respect to the limit of oscillation.

My improvement comprehends,broadly, the feature of clamping an adjustable stop upon the brake-shaft, as it is evident that such an adjustable stop might be adapted to my invention in various ways without departing from the spirit of the invention.

The employment of the sleeve F enables any brake-shoe to be fitted to the brakeshaft, because it is only necessary to apply a sleeve of difierent thickness to compensate for a relative difference in the diameter of the hole in the brake-shoe and the diameter of the spindle C. In this manner there is no necessity at any time to disturb the brake-iron in making repairs. The spindle C at the end is made with the flattened surface 0, and the springretaining cap is provided with a straight portion 6 in the hole, adapted to said flattened portion 0, so as to prevent the said cap from turning, and thereby loosening the nut. In this manner the spring is held against a rigid surface, and there is no tendency whatever for the nut becoming unscrewed and loosening the sleeve and washer.

While I prefer the construction shown as being excellently adapted for the purpose of my invention, it is to be understood that I do not confine myself to the minor details, as these may be modified while retaining the essential characteristics of my improvements.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

' 1. In a brake-shoe for vehicles, the combi nation of a brake-shaft havinga collar, asleeve encircling the shaft, a brake-shoe loosely journaled upon the sleeve with freedom of oscillation, means to prevent the brake-shoe from rotating, a retaining-cap upon the end of the brake-shaft, and a spring interposed between the retaining-cap and the brake-shoe to retain the said shoe in any position assumed.

2. In a brake-shoe for vehicles, the combination of a brake-shaft havinga collar, a sleeve encircling the shaft, a brake-shoe loosely journaled upon the sleeve, a retaining-cap upon the end of the brake-shaft, a spring interposed between the retaining-cap and the brake-shoe,

and a washer positively clamped between the end of the sleeve and the collar of the brake shaft and receiving the side thrust of the brakeshoe.

3. In a brake-shoe for vehicles, the combination of a brake-shaft havinga collar, a sleeve encircling the shaft, a brake-shoe loosely journaled upon the sleeve, a retaining-cap upon the end of the brake-shaft, a spring interposed between the retaining-cap and the brake-shoe, and a washer positively clamped between the end of the sleeve and the collar of the brakeshaft and receiving the side thrust of the brakeshoe and also provided with a lateral projection or lug acting as a limit-stop for the oscillation of the brake-shoe upon the sleeve.

4. In a brake-shoe for vehicles, the combination of the transverse brake-shaft having a collar and spindle at the end, a sleeve fitted upon the spindle, a brake-shoe journaled upon the sleeve, a sprii'ig-retainingcap carried upon the spindle and held against rotation thereon, a nut screwed upon the end of the spindle to clamp the retaining-cap tightly against the sleeve, and an annular spring of sinuous form interposed between the cap and the brake-shoe and encircling the sleeve.

5. In a brake-shoe for vehicles, the combination of a transverse shaft having a collar, with a sleeve encircling the shaft, a washer clamped between the sleeve and the collar, a brake-shoe journaled upon the sleeve-and resting against the washer, and means to clamp the sleeve against the washer and cause the brake-shoe to press against the said washer.

6. In a brake-shoe for vehicles, the combination of a transverse brake-shaft having a collar, a washer resting against the collar and provided with a projection, a sleeve encircling the shaft and pressing against the washer to clamp it, a brake-shoe journaled upon the sleeve and having means to receive the projection of the washer to limit the oscillation of the brake-shoe, and means to clamp the sleeve upon the washer and shaft.

7. In a brake-shoe for vehicles, the combination of a transverse brake-shaft having a collar, a brake-shoe journaled thereon, a part encircling the brake-shaft and provided with a lug acting as a limit-stop and directly coacting with the brake-shoe to limit its oscillation, and means to clamp said part having the lug ad justably upon the brake-shaft against the collar for the purpose of adjusting the po- 7 sition of oscillation of the brake-shoe.

In testimony of which invention I hereunto set my hand.

M. W. MORTON.

Witnesses:

R. M. HUNTER, R. M. KELLY. 

